Introduction The Spike’s Tactical M4 flat top upper receiver is machined from a Mil-Spec 7075 T6 forging with a durable Type III Hardcoat Anodized finish that also features laser engraved T-Markings, M4 feed ramps cut into the receiver before Anodizing to avoid future reliability issues, and finished with our spider logo. We’ve also included a forward assist and ejection port door cover already installed in the upper for you!

Features

Machined from a Mil-Spec 7075 T6 forging

Type III Hardcoat Anodized finish

Ejection port door cover and forward assist come pre-installed

Included

Spike’s Forged M4 Flat Top Upper Receiver (Stripped)

Pre-installed forward assist and ejection port door cover

Spike's Tactical Lifetime Warranty

Reviews

1) 5/5 STAR *****

Just recieved my upper today. Fits great on my Rock River lower.. Love the look and cant wait to finish my build. thanks, SpikesDate Added: 03/08/2011 by Robert Dulaney

2) 5/5 STAR *****

This is a perfect example of great american machine work, and it is going to look great on my Jolly Roger lower.... like waiting to unrap a Christmas present!Date Added: 06/24/2010 by Jack Blackwell

3)5/5 STAR *****

Fit and Finish is better than great! Matches up to my spikes lower (purchased through a different vendor) better than if I'd bought a matching set from someone else.Date Added: 04/08/2010 by Joshua Guthans

4) 5/5 STAR *****

Absolutely remarkable M4 flat top upper receiver! The anodized finish is perfect, T-markings are clean and clear, and the Spike's logo tops it off showing you mean business. Hands down, this upper receiver is a wise investment for anyone starting their new build. At this price and quality its a guaranteed steal! Received my new Spike's M4 flat top upper on 2-15-2010...2 thumbs up, way up!Date Added: 02/16/2010 by Lucky Roman

Excellent fit and finish. Great for any build. Feedramps are perfect and anodizing is flawless.Date Added: 01/06/2010 by Nick Nyzowyj

7) 5/5 STAR *****

I bought one of these and built an awesome 16"Tactical with it. Fit and finish is excelent. M4 ramps matched perfect with the barrel. The BCG was also from Spikes and I get nothing but compliments on how it looks as well as how accurate this piece is. Never a jamb or misfire. I have 3 or 4 people who want me to duplicate my rifle for them.Date Added: 03/18/2009 by Ralph Zobjeck

8) 5/5 STAR *****

This looks and feels great on my Spike's pistol lower. You can't beat the price.Date Added: 02/10/2009 by James Lindsay